痛心切齿: gnash one's teeth with anger; make one burn with anger
多么: how; what 短语和例子多么好的主意! what a good idea! 你看来多么健康啊! how well you look! 不管天气多么冷, 他都坚持户外锻炼。 however cold it was, he never stopped taking outdoor exercise. 这是多么高尚的精神! what a noble spirit this